鏡頭速率 的英文怎麼說
中文拼音 [jìngtóusùlǜ]
鏡頭速率
英文
lens speed-
1, cut over a head : bring up to combine the applied technique most and early for the toshiba, and is also current usage to is the most extensive. he adopts a laser head, and prepare the different slice of 2 focal distances the sony for cut over, passing the conversion differently focusing the coming respectively reading dvd with cd, its shape looking with double head to resemble respectively, because can see two sets focuse the, laser head to interiorly can t see. he reads the signal quantity is higher, but because of want the conversioning to focuse the, therefore the cost belong to the inside and so forth of level, and recognize the dish speed slow, same the implicit mechanical trouble rate is high
1切換雙鏡頭：為toshiba最早提出並應用的技術，也是目前使用最廣泛的。他採用一個激光頭，分別準備2個焦距不同的鏡片切換，通過轉換不同的聚焦鏡來分別讀取dvd和cd ，它的外形看起來與雙頭的sony相似，因為只能看到二組聚焦鏡，激光頭在內部看不見。他讀取信號質量較高，但由於要轉換聚焦鏡，所以成本屬于中等水平，認盤速度較慢，同樣隱含的機械故障率比較高。4, single focuse the single head : is single for single laser head that panasonic lead off to adopt to focuse the double the laser beam for focusing ordering the project, he adopting the special whole synthesizing lens, passing lens in the center part ofly the focusing of formation cd the point, and pass the anastigmatic laser beam of part edge the formation the focusing of dvd the point, this kind of construction because of have no the machining to spread to move, and also can t produce the mechanical trouble, therefore increased to recognize the dish the speed, and however and also lowered the cost. but adoption this project of generation is with part of the next generation dvd nonsupports cdr
4單聚焦單鏡頭：為panasonic率先採用的單激光頭單聚焦鏡雙聚焦點方案，他採用特別的全息綜合透鏡，通過透鏡中間部分的激光束形成cd的聚焦點，通過透鏡邊緣部分的激光束形成dvd的聚焦點，這種結構由於沒有機械傳動，也不會產生機械故障，所以提高了認盤速度，不過同時也降低了成本。但採用此方案的第一代和部分第二代dvd不支持cdr 。The study on query system using the basketball video fragments as an example is involved in such areas : first, in the condition of " video - flash " and " jump " phenomenon, the " two - level video segmentation algorithm " solves the mistaken detection of the shot edge ; second, the part or the whole video as the result of detection can be well played ; third, the text on the complex background can be detected and fixed, not only the speed but also the right proportion have been improved ; forth, the text can be divided into " regular detection " and " irregular detection "
本課題以籃球比賽的視頻片斷為例，主要進行了以下幾個方面的研究： 1 ）針對視頻中的「閃動」和「急跳」現象，提出了「二級鏡頭分割演算法」 ，解決了鏡頭邊緣的誤識別問題。 2 ）對所檢測出的視頻片斷或整個視頻流進行播放。 3 ）基本解決了復雜背景下文字檢測與定位問題，提高了數字的識別速度與正確率。
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